Just to give you guys an idea on my ramcharger fan harness kits, this is a recent reply by a 3rd gen fbody owner after using one of my fan assemblies w/control harness using a BMW 180/195 dual temp switch:

Originally Posted by 89gta383No ac on the car, when did you ship?I shipped it early this morning-tracking # is 776697377182

If you don't have AC (I added the AC override thinking u were using it being as it gets HOT down there lol) but you can use a trigger too if need be for a manual override before the engine gets to temp....you probably won't need it often but it's there just in case.i put the fans in and the car stays around 183-187 when driving when it is 95 degrees outside. Used to run around 207-215, so that is an improvement. Thanks for your help. After letting the car heat soak in the parking lot after driving for awhile, the fans pull the temp down from 205 to 185 in about 5 seconds. Old fans never could bring the temp down once it got up there. I hooked the red battery cable to the battery, ground to fan #1 ground and switched 12v to other hot in the same fan #1 plug. I will use the a/c wire as a manual fan switch. You put alot of extra wire on that wiring loom, so I will cut and solder what i don't need. The fan shroud needs a little bit of clearancing to get it to fit in front of the steering gear rack and the edges of the fan shroud need to be sanded so they both fit inside the radiator flush, other than that, this is the slimmest fan/shroud combo I could find that works. thanks again